SEDAMSVILLE, OH (FOX19) - A Sedamsville mother is under arrest after Cincinnati police say she videotaped her 12-year-old child driving a car with two younger siblings in the backseat. Sophia Henderson, 28, is held on three counts of child endangering at the Hamilton County jail.

She was taken into custody Monday afternoon, two days after police allege she allowed the 12-year-old drive a vehicle near their Hillside Avenue residence. At the time, her two other children, ages 3 and 7, were in the backseat while she capturing it all on video, court records show.

WASHINGTON, DC (CNN) - One person died on Monday after a problem with the subway system in Washington, DC, filled a tunnel with smoke.

It happened near the L'Enfant Plaza station near downtown Washington. Investigators are still trying to determine exactly what happened.

Passengers emerged from the subway with soot on their faces. Some struggled to breathe after inhaling smoke.

A passenger recorded a video as smoke poured into the metro station.

"There was no oxygen. People started panicking, and people started hitting the floor," one person said.

"I had the stocking cap, breathing through it," another person said. "Other people were breathing through their jackets."

The smoke came from one of the tunnels, where a train had stopped moving not far from the station.

"There were reports of a lot of smoke, smoke getting into the train, and people, what's called self-evacuate. That is they started opening the doors and getting off," said Mike Flanigon, National Transportation Safety Board investigator.

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